Hello. I've seen about thirty-odd TP scopes & they were all standard Lyman factory blue, consistent with lee enfield's comments above. I have one CNo67 which is finished in the dull slightly textured green paint. Is this what you refer to as silica paint? Most if not all of the REL No32's I've seen/owned were factory blued. It's possible I may have encountered one or two that were black over painted, but I can't remember for sure. I don't get too excited too often about black over painting as it can be very difficult to know who did it & when.